A new key comparison of the standards for air kerma of the Bundesamt fr Eich- und Vermessungswesen (BEV), Austria and of the Bureau International des Poids et Mesures (BIPM) was carried out in the ⁶⁰Co radiation beam of the BIPM in July 2020. The comparison result, evaluated as a ratio of the BEV and the BIPM standards for air kerma, is 1.0030 with a combined standard uncertainty of 2.5 parts in 10³. The result agrees within the uncertainties with the direct comparison carried out in 2009. The results are analysed and presented in terms of degrees of equivalence, suitable for entry in the BIPM key comparison database.

To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.

The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

于2020年7月在BIPM的⁶⁰ Co辐射束中对奥地利联邦议院（BEV）和奥地利国际仿生和气象局（BIPM）的空气比释动能标准进行了新的关键比较。比较结果以空气比释动能的BEV和BIPM标准之比评估为1.0030，组合标准不确定度为10 ^3中的2.5 。结果与2009年进行的直接比较在不确定性范围内吻合。分析结果并按照等价程度进行了分析，适合输入BIPM密钥比较数据库。

要获得本文的正文，请单击“最终报告”。请注意，此文本显示在BIPM密钥比较数据库kcdb.bipm.org/的附录B中。

根据CIPM相互认可安排（CIPM MRA）的规定，最终报告已由CCRI进行同行评审并批准发布。